What a mess. I'm sorry this pain is in all your lives, and I am sure Alice is blessed to have you to love and care for her.

If this pregnant woman (rather than use the word mother, I think I'd have to use something a bit nastier, so we'll leave it at that) has a history with the courts of using drugs during pregnancy and giving birth to drug addicted/affected babies, they should be notified of her condition. There are social workers involved who have the responsibility to do whatever is necessary to protect this child.

You can only do so much, and you are already doing more than that. Pray for all of them, and I hope there is some answer that protects this baby.